Mercury 350 HP ECT 6.2L Inboard Engine

High-Power V8 Marine Performance

The Mercury MerCruiser 6.2L 350 ECT is designed for demanding marine conditions, superior durability, and consistent power delivery. From the first ignition to long-distance cruising, this engine delivers smooth acceleration and dependable output.

Moreover, every major component is optimized for corrosion resistance and efficiency. Therefore, boat owners benefit from long-term reliability in both freshwater and saltwater environments.

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Mercury MerCruiser 6.2L 350 ECT Power, Torque, and Acceleration

With 350 horsepower and a 6.2L V8 platform, this engine produces strong low-end torque and rapid throttle response. As a result, boats reach planing speed faster and maintain momentum more easily.

Furthermore, the long-runner scroll intake manifold improves airflow. Consequently, combustion efficiency increases, while fuel delivery remains balanced at all speeds.

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Mercury MerCruiser 6.2L 350 ECT Adaptive Speed Control and SmartCraft Handling

Adaptive Speed Control (ASC) automatically stabilizes RPM during turns and sudden load changes. Therefore, handling becomes smoother and more predictable in challenging conditions.

In addition, SmartCraft Digital Throttle & Shift (DTS) ensures precise gear engagement. As a result, docking, maneuvering, and cruising remain controlled and stress-free.

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Mercury MerCruiser 6.2L 350 ECT Quiet Ride and Vibration Reduction Technology

Advanced intake resonators and aft-facing throttle bodies significantly reduce operational noise. Consequently, engine sound is redirected away from the cockpit area.

Meanwhile, reinforced front and rear engine mounts absorb vibration. Therefore, passengers experience a noticeably smoother and quieter ride.

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Mercury MerCruiser 6.2L 350 ECT Easy Maintenance and Service Access

Front-mounted, color-coded service points allow quick access to key components. As a result, routine inspections and fluid checks require less time.

Moreover, the Engine Guardian System actively monitors performance. Consequently, potential issues are detected early, helping to prevent major failures.

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Mercury MerCruiser 6.2L 350 ECT Corrosion Protection and Marine Durability

Marine-grade materials, corrosion-resistant coatings, and optional SeaCore® protection work together to defend internal systems. Therefore, long-term structural integrity is maintained.

Additionally, the MercFusion paint system provides an extra environmental barrier. As a result, external components remain protected in harsh marine climates.

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Why Choose Mercury MerCruiser 6.2L 350 ECT Inboard Engine?

• V8 Power with Marine Optimization: Therefore, you receive high torque and acceleration without sacrificing durability.
• OEM Factory Warranty: Moreover, genuine Mercury backing ensures long-term confidence.
• Emissions Control Technology (ECT): Consequently, the engine meets modern environmental standards.
• SmartCraft Digital Controls: In addition, operators benefit from real-time diagnostics and system feedback.
• Engine Guardian Safety System: As a result, engine components are protected from overload and overheating.
• Verified Customer Satisfaction: Furthermore, consistent positive reviews reflect proven performance.
• Global Service Network: Finally, worldwide support guarantees reliable servicing wherever you operate.

Therefore, this engine represents a balanced investment in power, efficiency, and long-term value.

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Technical Specifications – Mercury MerCruiser 6.2L 350 ECT

Engine & Performance Specifications

Specification	Details
Power Output	350 HP (261 kW)
Engine Type	V8, 2-Valve Pushrod
Displacement	6.2 L (377 CID)
WOT RPM	5000–5400
Bore × Stroke	4.0 × 3.75 in
Exhaust	Through Prop

Fuel & Air Management System

Specification	Details
Fuel Delivery	Multi-Port EFI (MPI)
Air Induction	Performance Scroll Intake
Fuel Type	Unleaded 87 Octane / 90 RON

Electrical, Control, and Safety Systems

Specification	Details
Control System	SmartCraft ECT
Ignition	SmartCraft PCM 112
Safety System	Engine Guardian

Cooling and Lubrication System

Specification	Details
Cooling	Water-Cooled w/ Thermostat
Lubrication	Integrated Wet Sump
Oil Type	FCW 25W-40 Synthetic Blend

Dimensions and Weight

Specification	Details
Length	813 mm
Width	762 mm
Height	559 mm
Dry Weight	391 kg (862 lbs)

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Certifications and Regulatory Compliance

Certification	Status
Emissions Compliance	EPA Marine Standards
Emissions Control Technology	ECT Certified
Safety Compliance	NMMA Standards
Quality Assurance	Mercury OEM Certified
Corrosion Protection	SeaCore® Compatible

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Mercury MerCruiser 6.2L 350 ECT vs Competing Marine Engines

Before purchasing, it is essential to compare power, efficiency, and ownership costs.

Model	Power	Displacement	Fuel Type	Best Use
Mercury 350 HP ECT	350 HP	6.2L	Gasoline	Cruisers, sport boats
Mercury 250 HP ECT	250 HP	4.5L	Gasoline	Mid-size vessels
Volvo Penta D3	170–220 HP	2.0–2.4L	Diesel	Premium cruisers

Compared to smaller engines, the Mercury 350 HP ECT delivers stronger acceleration. Meanwhile, it maintains balanced fuel efficiency and simplified maintenance.

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Explore and Compare Mercury Inboard Engines

• Mercury 250 HP ECT 4.5L
• All Inboard Engines
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• Yanmar Inboard Engines

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Customer Trust, Warranty, and After-Sales Support

• OEM-backed manufacturer warranty
• Verified emissions certification
• Authorized dealer installation
• Genuine customer reviews
• Professional technical assistance

As a result, buyers benefit from long-term peace of mind and consistent service quality.

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Frequently Asked Questions (FAQs)

What boats are compatible with the Mercury 350 HP ECT?

This engine is suitable for cruisers, performance boats, and sport vessels designed for V8 inboard installations.

How long does the Mercury MerCruiser 6.2L 350 ECT engine last?

With proper maintenance, many units exceed 4,000 to 5,000 operating hours.

Does the Mercury 350 HP ECT require regular maintenance?

Yes. Regular oil changes, cooling inspections, and scheduled servicing are essential for optimal performance.

Is this engine suitable for saltwater use?

Yes. With optional SeaCore® protection and closed cooling systems, it performs reliably in saltwater conditions.

Can this engine be financed?

Yes. Mercury Repower Financing provides flexible payment plans for engines and installations.

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Experience premium V8 performance with the Mercury MerCruiser 6.2L 350 ECT Inboard Engine.

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